currently there's a project on going to bring fully fledged windows 10 (WoA) on Windows Phone devices (Lumia 950xl), we have been able to achieve this by unblocking the bootloader of such phones, so far windows 10 fully boots and works, however we are missing some functionality such as wlan, due to requires UEFI PCIe bring up, we have our custom UEFI that makes the system to work, we can even make dual boot on the phones as of right now, however, in order for extended functionality to happen, we need to properly develop UEFI, in order to bring up the required PCIE